Typewriter attachment



UNITED STATES PATENT OFFICE.

GUILLERMO CASTELLANOS, OF LOS ANGELES, CALIFORNIAn TYPE'WBITER ATTACHMENT.

T 0 all whom it may concern.'

Be it known that I, GUILLERMO CASTEL- LANOS, a citizen of Mexico, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Typewriter Attachments, of which the following is a specification.

My object is to make an improved typewriter attachment, and my invention consists of the novel features herein shown, de-

scribed and claimed.

Specifically an object of my invention is to make a traveling solenoid for moving the carriage of a typewriter and the like.

Figure 1 is a diagrammatic side elevation of a typewriter provided with a traveling solenoid for moving the carriage in accordance with the principles of my invent-ion.

Fig. 2 is a diagrammatic view longitudinally of the solenoid and from the back side of the typewriter.

Fig. 3 is a fragmentary perspective of the .solenoid attached to the carriage, the carriage being broken away.

The solenoid core 1 is a long straight round bar consisting of the sections 2. 3, 4. 5, 6, 7, 8. 9, 10. 11, 12. 13 and 14. The sections 2, 4, 6. 8. 10, 12 and 14 are magnetic conductors, and the sections 3, 5, 7, 9, 11 and 13 are nonmagnetic conductors, and the magnetic and non-magnetic conductors are arranged alternately end to end, and the magnetic sections are substantially the same lengths as the non-magnetic sections. The core 1 thus produced is mounted with its ends connected to the frame bar side bars 15 and 16. t

The solenoid 17 consists of the supporting brackets 18 and 19 having attaching plates 2O and 21 bent. at right angles and secured to the frame bar 22 by screws 23, a spool 24 mounted between the brackets 18 and 19, a coil 25 mounted upon half of the spool, a coil 26 mounted upon the other half of the spool, a spring brush 27 connected to one end of the spool 24 and extending downwardly and having a yielding contacting end 28, a spring brush 29 connected to the spool and extending upwardly and having a yielding contacting end 30, the inner ends of the coils 25 and 26 being connected to the brush 30 and the other end of the coil 26 being connected to the brush 28, and a spring brush 31 connected to the other end of the spool and to the other end of the coil 25 and having a. yielding contact 32 extending downwardly.

Specication of Letters Patent.

Patented Sept. 20, 1921.

i919. serial No. 308,242.

The spool 24 is slidingly mounted on the core 1. The contact bar 33 is connected to the upper ends of the posts 15 and 16 parallel with the core 1 and in position to be engaged b v the contact 30 and electrically separated from the posts 15 and 16 by insulations 34 and 35. One end of the battery 36 is connected by a wire 37 to the bar 33. The contact. bar 38 is connected to the side bars 15 and 16 parallel with the core 1 and electrically separat-ed from the side bars b v insulations 39 and 40. The other end of the battery 36 is connected by a line 41 through a switch 42 to the bar 38. The bar 38 has insulation blocks 43. 44. 45. 46. 47 and 48 embedded into its upper face. and flush with the upper face, and the contacts 28 and 32 bear upon this upper face. The insulation blocks 43. 44. 45. 46. 47 and 48 are directly1 in line with the insulation blocks 3. 5, 7. 9, 11 and 13.

lVhen the typewriter carriage is moved to move the solenoid 17 to the right-hand position. as shown in dotted lines in Fig. 2. and the button is pushed to close the switch 42 the. circuit will pass through the bar 38 to the conducting contact section 49 and through the spring brush 27 to the coil 26 and through the brush 29 to the bar 33. thus energizing the coil 26. the bulk of which is out of alinement with the core section 12 and the coil will attract the core section 12 thereby pulling the coil int-o alinement with the core section and move the solenoid 17 to the left as indicated by the arrow 50. As soon as the coil 26 is in alinement with the core section 12 the brush 31 will be in contact with the contact section 51 and the coil 26 will be de'e'nergized by the brush 27 contacting with the insulation block 47 and the coil 25 will be energized and will be out of alinement with the core section 10, and the energy of the coil will pull the solenoid into alinement with the core section 10.

Continued operation will cause the solenoid to travel the length of the core 1 thereby moving the carriage of the typewriter from one side to the other.

It is obvious that the attachment may be used on a typewriter to move the carriage in either direction, and that two attachments might be used to operate in opposite directions so that by pushing one button the carriage will move one way and by pushing the other button the carriage will move the other way.

It is obvious that the traveling solenoid may be used for other purposes and that it may be made of any desired length and of any desired power, and further, that the solenoid may be held and the core moved instead of the core being held and the solenoid moved.

The same solenoid can be made to travel in the opposite direction by turning the solenoid end for end or by changing the contacts.

Thus'I have produced a traveling solenoid consisting of two coils and a plurality of insulated core sections mounted in a line and brushes adapted to alternately energize the coils out of alinement with the core sections to cause the coils to pull toward the core and either move the core or move the coil.

Various changes may be made without departing from the spirit of my invention as claimed.

I claim:

l. A traveling solenoid comprising a spool having a central opening and two coils, a core itting in the opening and made up of alternate sections of magnetic and nonmagnetic material; a make and break bar having alternate contact sections land nonmagnetic sections formin a bearing surface; brushes extending rom the ends of the spool and connected to the ends of the coils and bearing against the make and break bar; a contact bar connected to the opposite ends of the coils; and means for establishing an electric circuit; `so that when the coils are energized alternately the core sections are out of alinement with the energized coil so as to pull the core and coil toward each other so as to move either the core or the coil.

2. An electro-magnet comprising a suitably mounted core comprising alternate Sections of magnetic and non-magnetic materials, a solenoid comprising two coils mounted end to end and slidably mounted on said core, contact means to energize said solenoid to cause relative movement between it and the core, said means consisting of a contact bar of magnetic material, a similar contact bar having a contact face constructed of alternate sections of magnetic and nonmagnetic material, contact means on the solenoid contacting with said bars to alternately energize the coils.

An electro-magnet comprising a suitably mounted core constructed of alternate sections of magnetic and non-magnetic materials, a solenoid comprising two coils mounted end to end and slidably mounted on said core, contact. means to alternately energize the coils of the solenoid to move it on the core, said means consisting of a contact bar of magnetic material disposed parallel to the length of the core, a secondary bar having a contact face constructed of alternate sections of magnetic and non-magnetic materials similarly disposed, said magnetic and lion-magnetic portions being transversel)v alined with the similar sections of the core. contact means on the coils contacting with said bars and means to energize the bar.

4. A device for actuating the carriage of a typewriter comprising an electro-magnet consisting of a relatively stationary horizontal core constructed of alternate sections of magnetic and non-magnetic materials, a solenoid comprising two coils mounted end to end on a frame which in turn is slidably mounted on said core, the length of Said coils being slightly greater than the magnetic sections of the core. contact means to energize said solenoid to move it on said core` said means consisting of a contact bar oi' magnetic material disposed parallel with the full length of the core. and a secondar)v contact bar having a contact face constructed of alternate sections of magnetic and nonmagnetic materials similarly disposed, said magnetic and non-magnetic sections being substantially in transverse alinement with the similar sections of the core, contact means between the coils and the rst mentioned bar. separate contact means on the coils contacting with the last mentioned bar to alternately energize said coils, said last mentioned contact being spaced apart a distance slightly greater than the length of the magnetic and non-magnetic sections of the contact and means to energize said contact bars.

In testimony whereoic I have signed my name to this specification.

G. CASTELLANOS. 

